return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for H2O (Water)

using model chemistry: CID/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CID/SDD
 hartrees
Energy at 0K-76.136428
Energy at 298.15K-76.137525
HF Energy-76.009852
Nuclear repulsion energy9.010782
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at CID/SDD
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3720 3437 0.96      
2 A1 1653 1527 99.46      
3 B2 3891 3595 17.57      

Unscaled Zero Point Vibrational Energy (zpe) 4631.7 cm-1
Scaled (by 0.924) Zero Point Vibrational Energy (zpe) 4279.7 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at CID/SDD
ABC
30.52537 13.01063 9.12244

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/SDD

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.111
H2 0.000 0.802 -0.444
H3 0.000 -0.802 -0.444

Atom - Atom Distances (Å)
  O1 H2 H3
O10.97540.9754
H20.97541.6035
H30.97541.6035

picture of Water state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 O1 H3 110.574
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability